Improvement in fish-hatching apparatus



S1 WILMOT. lFISH-HATCIHNGAPPARMUS..

No. 180,085. Patented 51113718, 1876.

l'l'j; 11111111111 rrEE! frAirEs ATENE SAMUEL wrLMoT, or NEWCASTLE, ONTARIO, CANADA.

IMPROVEMENT lN FISH-HATCHING `APPARATUS.

Specification forming part of Letters Patent No. lb, dated July 18, 1876; application filed May 15, isvc.

To all whom it may concern:

Be it known that I, SAMUEL WrLMo'r, of Newcastle, in the county of Durham, in the ProvinceofUntario and Dominion of Canada,

haveinvented certain new and useful Improve! purpose of keeping the eggs in motion. Heretofore these receptacles have been provided with a Wire screen or rim, for the purpose ofpreventing the in the receptacle from liability of removal with the overflow. v

In my improvement I dispense with the Wire rim and keep the perfect eggs within the re ceptacle by regulating the force of the flow of water so asnot to lift them to the height ofthe overllow, only deleterious lighter substances being raised to a sufficient height to pass oli' with the overtlow,vthe object of my invention being to cleanse the ova and sepa ate the perfect from the imperfect eggs in the process of hatching, and to prevent sediment in the water from being deposited on the ova; and niyinvent-ion consists, first, of a fish-hatching apparatus, having basins for incubation, in which a vertical circulating current of water keeps the eggs in motion, the defective ones passing off with the overflow waste; second,

of a fish-hatching apparatus, having one or more funnel-shaped basins of a rounded bottom, and a central vertical tube or stand-pipe delivering the intlow either upward or downward at the bottom ofthe basin, and an eduction pipe or spout, through which thedefective ova near the surface of the water are carried otf with the overflow waste-water 5 third, of a fish-hatching apparatus, having one or inoi'e receptacles, provided with an inductionpipe, having an inclined jacket for digressing the inflow and a waste-outlet pipe.

i Figure l is a central vertical section of my improved apparatus, showing an inductionflow downwardly into the incubating-basin. Fig. 2 is alike view, showing an inductiontlow upwardly' into the basin.

A is a reservoir of water, and Ban eductioiipipe therefrom, provided with valve c for regulating the ow therefrom. D are the hatching-basins, funnel-shaped, or of other suitable vShape, constructed with inwardly-tapering sides lil', or having a rounding bottom. E is a vertical induction-tube, removablysuspended or xed in any suitable manner within the basin D, its outlet being near the bottom of the basin, its inlet connecting with the pipe 'B by means of a hose, F, er other contrivance provided with a valve, G, for regulating the supply of water. H is an overflow pipe or spout to carry off theA imperfect or dead ovawith the waste water.

In Fic'. 2 is shown a modification of my'apparatus, in which the water passes into the basin upwardly through a tube, I, having a perforated outlet in the bottom of the basin, said vtube I connecting with the supply-pipe B by a hose, J, having a valve, K, for regulating the supply.

Alf found convenient to place the supply-pipe B below the basins D, they may be set upon thiinbles projecting from the supply-pipe B, in which case the hoseconnections F J may be dispensed with.

The tube E may be surrounded by a conical jacket, L, tapering upwardly to induce a graduated current upwardly, whereby the light oi imperfect eggs are carried up with the current to near the surface of the water, the heavy or perfect eggs falling toward the bottoni of the basin.

' M N are stoppers in the tubes EV I, to be used as occasion may require.

rIhe operation of the apparatus is as follows: rIhe water from the reservoir A, by a connection of pipes, passes through the tube E downwardly into the bottom of. the basin, or upwardly through thel tube I, in each case the water being discharged into tliebasin at or near its bottoni. The water, striking against the bottom of the basin in the one case, and the bottom of the tube E in the other case,

, glancesoff uniformly around the slanting sides of the basin, carrying up with it the ova'or O, which, followingthe current, then roll toward the tube E. The heavy or sound eggs fall to the bottom of the basin at the sides of the jacket or tube, to be again moved by the circulation of water, as before mentioned.

The light or imperfect eggs, together with sedinientar r substances in the water, pass up the outside of the jacket by the upwardflow, and are carried ofi' with the waste water through the pipe or spout H.

I claim as my inventionl. In the art of tish-l'iatehing, the process of cleansing ova and separating the imperfect from the sound and perfect eggs, consisting essentially in placing said ova in a suitably formed-basin or other receptacle, causing' an upward iiow ot' water therein sutieiently strong to keep said ova slightly in motion, and removing sediment and the lighter or (le. feetiie eggs by means ofthe overflow, subs tautially as described7 forth.

2. A fish hatching apparatus, having one and for the purpose set or more funnel-shaped or rounded bottom basins, D, a central induction-pipe, E, for discharging water downwardly. therein, and an overflow-pipe, H, for carrying oft' the sediment and defective ova with the waste wate1,as set forth.

3. A Hsin-hatching apparatus, having one or more funnel-shaped or rounded-bottom basins, D, an induction-pipe, E,'1"or discharging water downwardly into the same, an iueliuedjaeket, L, for digressing the inflow, and a waste-outlet pipe, H, substantially as and for the purpose set forth.

i SAML. WILMOT. Witnesses:

A. WILMOT, GEORGE GUR'rIs.` 

